/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-newlib/double_req_bl_1032a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:46:03,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:46:03,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:46:03,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:46:03,557 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:46:03,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:46:03,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:46:03,575 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:46:03,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:46:03,586 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:46:03,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:46:03,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:46:03,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:46:03,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:46:03,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:46:03,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:46:03,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:46:03,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:46:03,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:46:03,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:46:03,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:46:03,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:46:03,655 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:46:03,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:46:03,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:46:03,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:46:03,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:46:03,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:46:03,691 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:46:03,744 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:46:03,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:46:03,748 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:46:03,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:46:03,749 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:46:03,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:46:03,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:46:03,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:46:03,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:46:03,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:46:03,751 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:46:03,752 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:46:03,752 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:46:03,752 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:46:03,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:46:03,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:46:03,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:46:03,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:46:03,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:46:03,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:46:03,754 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:46:03,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:46:03,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:46:03,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:46:03,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:46:03,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:46:04,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:46:04,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:46:04,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:46:04,254 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:46:04,255 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:46:04,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1032a.c [2020-12-22 03:46:04,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57c960f27/4529047aff0f4c71a8c32c8d6debf3d9/FLAGc6eeae92a [2020-12-22 03:46:04,874 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:46:04,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1032a.c [2020-12-22 03:46:04,882 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57c960f27/4529047aff0f4c71a8c32c8d6debf3d9/FLAGc6eeae92a [2020-12-22 03:46:05,253 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57c960f27/4529047aff0f4c71a8c32c8d6debf3d9 [2020-12-22 03:46:05,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:46:05,265 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:46:05,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:05,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:46:05,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:46:05,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:05" (1/1) ... [2020-12-22 03:46:05,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27ce387d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:05, skipping insertion in model container [2020-12-22 03:46:05,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:05" (1/1) ... [2020-12-22 03:46:05,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:46:05,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:46:05,550 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1032a.c[2282,2295] [2020-12-22 03:46:05,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:05,565 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:46:05,600 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1032a.c[2282,2295] [2020-12-22 03:46:05,601 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:05,620 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:46:05,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:05 WrapperNode [2020-12-22 03:46:05,620 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:05,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:05,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:46:05,622 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:46:05,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:05" (1/1) ... [2020-12-22 03:46:05,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:05" (1/1) ... [2020-12-22 03:46:05,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:05,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:46:05,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:46:05,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:46:05,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:05" (1/1) ... [2020-12-22 03:46:05,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:05" (1/1) ... [2020-12-22 03:46:05,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:05" (1/1) ... [2020-12-22 03:46:05,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:05" (1/1) ... [2020-12-22 03:46:05,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:05" (1/1) ... [2020-12-22 03:46:05,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:05" (1/1) ... [2020-12-22 03:46:05,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:05" (1/1) ... [2020-12-22 03:46:05,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:46:05,730 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:46:05,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:46:05,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:46:05,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:46:05,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:46:05,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:46:05,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-22 03:46:05,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:46:05,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:46:05,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:46:05,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:46:05,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:46:05,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:46:06,455 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:46:06,455 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-22 03:46:06,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:06 BoogieIcfgContainer [2020-12-22 03:46:06,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:46:06,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:46:06,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:46:06,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:46:06,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:46:05" (1/3) ... [2020-12-22 03:46:06,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f33c8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:06, skipping insertion in model container [2020-12-22 03:46:06,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:05" (2/3) ... [2020-12-22 03:46:06,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f33c8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:06, skipping insertion in model container [2020-12-22 03:46:06,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:06" (3/3) ... [2020-12-22 03:46:06,468 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032a.c [2020-12-22 03:46:06,476 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:46:06,482 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:46:06,517 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:46:06,565 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:46:06,565 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:46:06,565 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:46:06,565 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:46:06,566 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:46:06,566 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:46:06,566 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:46:06,566 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:46:06,590 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-12-22 03:46:06,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 03:46:06,598 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:06,599 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:06,599 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:06,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:06,608 INFO L82 PathProgramCache]: Analyzing trace with hash 2068179301, now seen corresponding path program 1 times [2020-12-22 03:46:06,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:06,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634966481] [2020-12-22 03:46:06,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:46:06,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634966481] [2020-12-22 03:46:06,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:06,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:46:06,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647437301] [2020-12-22 03:46:06,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:46:06,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:06,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:46:06,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:06,875 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-12-22 03:46:06,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:06,906 INFO L93 Difference]: Finished difference Result 58 states and 88 transitions. [2020-12-22 03:46:06,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:46:06,908 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-22 03:46:06,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:06,929 INFO L225 Difference]: With dead ends: 58 [2020-12-22 03:46:06,929 INFO L226 Difference]: Without dead ends: 27 [2020-12-22 03:46:06,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:06,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-22 03:46:06,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-22 03:46:06,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-22 03:46:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-12-22 03:46:06,990 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 11 [2020-12-22 03:46:06,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:06,991 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-12-22 03:46:06,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:46:06,992 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-12-22 03:46:06,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 03:46:06,994 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:06,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:06,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:46:06,995 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:06,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:06,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1606867070, now seen corresponding path program 1 times [2020-12-22 03:46:06,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:06,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542745353] [2020-12-22 03:46:06,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:07,110 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:07,139 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:07,167 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:46:07,167 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:46:07,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:46:07,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:46:07 BoogieIcfgContainer [2020-12-22 03:46:07,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:46:07,204 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:46:07,204 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:46:07,205 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:46:07,205 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:06" (3/4) ... [2020-12-22 03:46:07,209 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:46:07,210 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:46:07,212 INFO L168 Benchmark]: Toolchain (without parser) took 1948.66 ms. Allocated memory is still 151.0 MB. Free memory was 106.1 MB in the beginning and 91.0 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:07,213 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:07,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.45 ms. Allocated memory is still 151.0 MB. Free memory was 133.8 MB in the beginning and 122.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:07,215 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.94 ms. Allocated memory is still 151.0 MB. Free memory was 122.9 MB in the beginning and 121.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:07,216 INFO L168 Benchmark]: Boogie Preprocessor took 50.43 ms. Allocated memory is still 151.0 MB. Free memory was 121.1 MB in the beginning and 133.2 MB in the end (delta: -12.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:07,217 INFO L168 Benchmark]: RCFGBuilder took 727.73 ms. Allocated memory is still 151.0 MB. Free memory was 133.2 MB in the beginning and 114.1 MB in the end (delta: 19.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:07,218 INFO L168 Benchmark]: TraceAbstraction took 744.24 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 91.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:07,219 INFO L168 Benchmark]: Witness Printer took 5.77 ms. Allocated memory is still 151.0 MB. Free memory was 91.3 MB in the beginning and 91.0 MB in the end (delta: 236.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:07,225 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 331.45 ms. Allocated memory is still 151.0 MB. Free memory was 133.8 MB in the beginning and 122.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 55.94 ms. Allocated memory is still 151.0 MB. Free memory was 122.9 MB in the beginning and 121.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.43 ms. Allocated memory is still 151.0 MB. Free memory was 121.1 MB in the beginning and 133.2 MB in the end (delta: -12.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 8.0 GB. * RCFGBuilder took 727.73 ms. Allocated memory is still 151.0 MB. Free memory was 133.2 MB in the beginning and 114.1 MB in the end (delta: 19.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 744.24 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 91.5 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Witness Printer took 5.77 ms. Allocated memory is still 151.0 MB. Free memory was 91.3 MB in the beginning and 91.0 MB in the end (delta: 236.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 92, overapproximation of shiftRight at line 36, overapproximation of bitwiseAnd at line 37. Possible FailurePath: [L88] double x = 0.0; [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L29] COND TRUE exponent_less_1023 < 20 [L30] COND FALSE !(exponent_less_1023 < 0) [L36] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L37] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L38] return x; [L89] double res = round_double(x); [L92] EXPR res == 0.0 && __signbit_double(res) == 0 [L92] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L93] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...